Key Concepts: The somatic neuromuscular junction is the site of communication between motor neurons and skeletal muscle fibres. Specialisations of the neuromuscular junction mean that activity in and release of transmitter from motor neurons produces contraction of skeletal muscle fibres rapidly and reliably.he neuromuscular junction comprises four cell types: the motor neuron, terminal Schwann cell, skeletal muscle fibre and kranocyte, with the motor neuron and muscle fibre separated by a gap called the synaptic cleft.
Causes. Headaches can be triggered by a variety of factors. The most common cause of headaches is prolonged tension or stress. These are called tension headaches or muscle-contraction headaches. Virtually everyone suffers from this at some time. Muscles in your scalp, neck, and face tighten and contract, causing spasms and pain.
Headaches occur in millions of individuals across the country, and they have a mirad of different causes. The consumption of different foods can be the cause and the cure of headaches. Food allergies and sensitivities are a leading cause of headaches and migraines. The symptoms of headaches and migraines are not only pain, but can include vertigo, fatigue, malaise, and auditory and visual auras. Auras are a change in perception that can accompany severe headaches.